Fig. 1
From: hERG1 channel expression associates with molecular subtypes and prognosis in breast cancer
IHC and scoring system assessment for hERG1 in the different molecular subtypes. a–c Hematoxylin–Eosin staining (right panels) and IHC (left panels) of representative samples. a Score 1. b Score 2. Score 3 (d). No primary antibody (negative control). IHC procedures and scoring assessment were performed according to what reported in the “Materials and methods” section. Original magnification ×200. Scale bar: 100 μm. e Histogram summarizing hERG1 levels of expression in the four different pathological subtypes of breast cancer evaluated by IHC. White bars: Score 1, Grey bars: Score 2, Black bars: Score 3